S-LAH97 which is developed by reducing the cost of S-YGH51.(
06.30.2017
S-LAH97 is an optical glass for polished lenses. We are successful in the cost reduction of S-YGH51 by removing expensive raw material from S-YGH51. We are pleased to introduce S-LAH97 as an optical glass which can be effective for cost reduction and higher performance of customer’s products. S-LAH97 can be used in a wide variety of applications which are Interchangeable lenses for Single-lens reflex cameras, Projectors and so on.
| S-LAH97 (New Product) |
S-YGH51 (Current Product) |
||
| Eco Optical Glass | ○ | ○ | |
| Refractive Index nd | 1.75500 | 1.75500 | |
| Abbe Number νd | 52.32 | 52.32 | |
| CTE α (10-7/℃) |
-30～70℃ | 58 | 58 |
| +100～300℃ | 72 | 70 | |
| Transformation Point Tg(°C) | 692 | 700 | |
| Yield Point At(°C) | 709 | 712 | |
| Coloring | λ80 | 355 | 370 |
| λ5 | – | 280 | |
| Chemical Resistance | RW(P) | 1 | 1 |
| RA(P) | 4 | 4 | |
| W(S) | 2 | 1 | |
| SR | 51.2 | 51.0 | |
| PR | 2.0 | 2.0 | |
| Specific Gravity | 4.17 | 4.40 | |
| Knoop Hardness Hk | 730〔7〕 | 720〔7〕 | |
| Abrasion Aa | 64 | 61 | |
| Detail Catalog DATA | |||
| Available shapes |
•pressing
•saw cut center-less groundcylindrical blanks •cut blanks |
•pressing
•saw cut center-less groundcylindrical blanks •cut blanks |
|
Please consult us about available size and tolerance.